def calcTCI_os(cur_filename, lta_max_filename, lta_min_filename, dst_filename, gdal_path):
# arcpy-free version
# calculate Temperature Condition Index
# TCI = 100 x (LST_max - LST)/(LST_max - LST_min)
with rasterio.open(cur_filename) as cur_r:
# cur_band = cur_r.read(1, masked=True)
cur_band = cur_r.read(1, masked=False)
profile = cur_r.profile.copy()
print cur_r.nodatavals
with rasterio.open(lta_max_filename) as lta_max_r:
lta_max_a = lta_max_r.read(1, masked=False)
with rasterio.open(lta_min_filename) as lta_min_r:
lta_min_a = lta_min_r.read(1, masked=False)
numerator=(lta_max_a - cur_band)
denominator = (lta_max_a - lta_min_a)
res2 = np.where(np.logical_or(cur_band == cur_r.nodatavals[0],
np.logical_or(lta_max_a == lta_max_r.nodatavals[0],
lta_min_a == lta_min_r.nodatavals[0])),
cur_r.nodatavals[0], 100*(numerator/denominator))
profile.update(dtype=rasterio.float32)
dst_f = "{0}.tmp{1}".format(os.path.splitext(dst_filename)[0], os.path.splitext(dst_filename)[1])
with rasterio.open(dst_f, 'w', **profile) as dst:
dst.write(res2.astype(rasterio.float32), 1)
rasterUtils.setRasterNoDataValues(dst_f, dst_filename, gdal_path, -9999, None, 'Float32', True)
# del newd_f
# del res
# del res2
return 0
def calcVCI_os(cur_filename, evi_max_filename, evi_min_filename, dst_filename, gdal_path=None):
# arcpy-free version
# calculate Vegetation Condition Index
# VCI = 100 x (EVI - EVI_min)/(EVI_max - EVI_min)
with rasterio.open(cur_filename) as cur_r:
cur_band = cur_r.read(1, masked=False)
profile = cur_r.profile.copy()
print cur_r.nodatavals
with rasterio.open(evi_max_filename) as evi_max_r:
evi_max_a = evi_max_r.read(1, masked=False)
with rasterio.open(evi_min_filename) as evi_min_r:
evi_min_a = evi_min_r.read(1, masked=False)
numerator = (cur_band - evi_min_a)
denominator = (evi_max_a - evi_min_a)
denominator = np.where(denominator == 0, cur_r.nodatavals, denominator)
res2 = np.where(np.logical_or(cur_band == cur_r.nodatavals[0],
np.logical_or(evi_max_a == evi_max_r.nodatavals[0],
evi_min_a == evi_min_r.nodatavals[0])),
cur_r.nodatavals[0], 100.0 * (numerator.astype(np.float32) / denominator.astype(np.float32)))
profile.update(dtype=rasterio.float32)
dst_f = "{0}.tmp{1}".format(os.path.splitext(dst_filename)[0], os.path.splitext(dst_filename)[1])
with rasterio.open(dst_f, 'w', **profile) as dst:
dst.write(res2.astype(rasterio.float32), 1)
rasterUtils.setRasterNoDataValues(dst_f, dst_filename, gdal_path, -9999, None, 'Float32', True)
return 0
def calcVHI_os(vci_filename, tci_filename, dst_filename, shpfile, gdal_path=None):
# arcpy-free version
# calculate Vegetation Health Index
# VHI = 0.5 x (VCI + TCI)
# calcVHI_gdal_calculations(vci_filename, tci_filename, dst_filename, shpfile)
with rasterio.open(vci_filename) as vci_r:
vci_a = vci_r.read(1, masked=False)
# print vci_r.nodatavals
with rasterio.open(tci_filename) as tci_r:
tci_a = tci_r.read(1, masked=False)
profile = tci_r.profile.copy()
vci_a2 = None
tci_a2 = None
# print "initial"
# print np.max(vci_a)
# print np.min(vci_a)
# print np.mean(vci_a)
if tci_a.shape > vci_a.shape:
# only use smaller area
tci_a2 = np.resize(tci_a, vci_a.shape)
vci_a2 = vci_a
elif vci_a.shape > tci_a.shape:
vci_a2 = np.resize(vci_a, tci_a.shape)
tci_a2 = tci_a
else:
vci_a2 = vci_a
tci_a2 = tci_a
tci_a2[np.isnan(tci_a2)] = tci_r.nodatavals
vci_a2[np.isnan(vci_a2)] = vci_r.nodatavals
vhi = np.zeros(tci_a.shape, np.float32)
tmp = 0.5*(tci_a2 + vci_a2)
# vhi = np.where(tci_a == tci_r.nodatavals[0], -9999, 0.5) # * (tci_a2 + vci_a2))
vhi = np.where(np.logical_and(vci_a2 == vci_r.nodatavals[0],
tci_a2 == tci_r.nodatavals[0]),
vci_r.nodatavals,
np.where(vci_a2 == vci_r.nodatavals[0], tci_a2,
np.where(tci_a2 == tci_r.nodatavals[0], vci_a2,
np.where(np.logical_and(vci_a2 == 0.0, tci_a2 == 0.0), 0.0,
np.where(vci_a2 == 0.0, tci_a2,
np.where(tci_a2 == 0.0, vci_a2,
(tci_a2 + vci_a2)*0.5)))
)))
profile.update(dtype=rasterio.float32)
dst_f = "{0}.tmp{1}".format(os.path.splitext(dst_filename)[0], os.path.splitext(dst_filename)[1])
with rasterio.open(dst_f, 'w', **profile) as dst:
dst.write(vhi.astype(rasterio.float32), 1)
rasterUtils.setRasterNoDataValues(dst_f, dst_filename, gdal_path, -9999, None, 'Float32', True)
return 0
def calcAverageOfDayNight_os(dayFile, nightFile, avgFile, gdal_path):
print "calcAverage: ", dayFile, nightFile
dst_filename = "{0}.tmp{1}".format(os.path.splitext(avgFile)[0], os.path.splitext(avgFile)[1])
with rasterio.open(dayFile) as day_r:
profile = day_r.profile.copy()
# profile.update(dtype=rasterio.uint32)
profile.update(NoData=0)
day_a = day_r.read(1, masked=False)
with rasterio.open(nightFile) as night_r:
night_a = night_r.read(1, masked=False)
dst_r2 = np.where(np.logical_and(day_a==0, night_a==0), 0,
np.where(night_a==0, day_a,
np.where(day_a==0, night_a, (day_a + night_a)/2)))
with rasterio.open(dst_filename, 'w', **profile) as dst:
dst.write(dst_r2.astype(rasterio.uint16), 1)
rasterUtils.setRasterNoDataValues(dst_filename, avgFile, gdal_path, -9999, None, 'Int32', True)
